Active electronically scanned array (AESA) multi-function radars (MFRs) comprise numerous transmit/receive modules (TRMs) whose maximum temperature and temperature uniformity must be tightly controlled. This study proposes a new liquid-cooling-plate flow-channel design for an X-band AESA MFR: a two-layer straight channel incorporating multiple fins irregularly spaced along the flow channel. The proposed design (Type-4) is compared with three baseline channel designs. At the same coolant flow rate, Type-4 reduces the TRM maximum temperature by 28.2 K and the maximum inter-module temperature difference by 19.7 K relative to Type-1. However, the pressure drop increases by 726% because of the added internal surfaces and fins which are flow obstructions. A comprehensive thermo-hydraulic comparison, including pumping power criteria, is conducted over multiple flow-rate conditions. Overall performance was highest for Type-4, followed by Type-2, Type-3, and Type-1. When designs achieve similar maximum temperature and temperature difference with various coolant flowrate condition, Type-2 requires 83.6% less pumping power than Type-1, and Type-4 requires 33.8% less pumping power than Type-2.

Abstract
1. 서 론
2. 연구방법론
    2.1 형상 및 파라미터
    2.2 평가 지표
    2.3 수치해석 방법
    2.4 격자 의존도 테스트
3. 결과 및 토의
    3.1 채널 유량 분기량 분포
    3.3 동일 유량 조건 성능비교
    3.3 동일 압력강하 조건 성능비교
    3.4 펌프동력을 포함한 유로 형상 종합 평가
4. 결 론
References

• 김희준(LIG Nex1 Co., Ltd) | Heejoon Kim
• 라영은(LIG Nex1 Co., Ltd) | Young-Eun Ra
• 이종학(LIG Nex1 Co., Ltd) | Jong-Hak Lee Corresponding author
• 유구현(LIG Nex1 Co., Ltd) | Gu-Hyun Ryu